Operating systems notes
Disks, SSDs & Disk Scheduling
The slowest thing your program touches, and every trick the OS uses to make it hurt less. Every section is a drawn page beside a clear written explanation, about 17 minutes in all.
- Chapter 27 of 37
- About 17 minutes
- 8 sections
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In this chapter
- Why storage is the slow part
- HDD anatomy & the cost model
- Disk addressing: CHS to LBA
- Disk scheduling algorithms
- SSDs & the flash reality
- HDD vs SSD & what changed for the OS
- Reliability: RAID in brief
- Storage for engineers
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